Fix hidpi support for UnsupportedScreenGrabber fallback image

Without this, the text rendering will be blurry on hidpi setups.
KDAB · Jan 3, 2025 · 73ca923 · 73ca923
1 parent d847ddb
commit 73ca923
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/plugins/quickinspector/quickscreengrabber.cpp b/plugins/quickinspector/quickscreengrabber.cpp
@@ -822,15 +822,16 @@ UnsupportedScreenGrabber::~UnsupportedScreenGrabber()
 void UnsupportedScreenGrabber::requestGrabWindow(const QRectF & /*userViewport*/)
 {
     m_grabbedFrame.image = m_window->grabWindow();
-    m_grabbedFrame.image.setDevicePixelRatio(m_window->effectiveDevicePixelRatio());
 
     int alpha = 120;
     if (m_grabbedFrame.image.isNull()) {
-        m_grabbedFrame.image = QImage(m_window->size(), QImage::Format_ARGB32);
+        m_grabbedFrame.image = QImage(m_window->size() * m_window->effectiveDevicePixelRatio(), QImage::Format_ARGB32);
         m_grabbedFrame.image.fill(Qt::black);
         alpha = 200;
     }
 
+    m_grabbedFrame.image.setDevicePixelRatio(m_window->effectiveDevicePixelRatio());
+
     QPainter p(&m_grabbedFrame.image);
     p.setRenderHint(QPainter::TextAntialiasing);
     QColor gray(Qt::black);